This is a wonderful site to introduce students to epidemiology based on a museum exhibition in 1999. Short texts are accompanied on each page with colorful and/or historical photos. All the elements in the chain of infection (the pathogen, routes of transmission, and host defenses) are discussed as are the strategies to break the chain (diagnosis and treatment, vaccines). There is also a nice discussion of how environmental changes, including those resulting from human behavior, affect the distribution of pathogens. The resource page contains links to other websites for each of the subheadings addressed at this site.